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27 May, 18:04

Total number of electrons present in 1.8 grams of water is

(a) 6.023x10^22

(b) 6.023x10^24

(c) 18x10^23

(d) 6.023x10^23

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Answers (1)
  1. 27 May, 18:08
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    1 mole of water = 18 grams (you can find this by finding mass of two hydrogen and one oxygen which is (1*2) + 16 = 18)

    1.8 grams = 0.1 moles

    1 H2O molecule has 10 electrons so 0.1 moles can be computed as:

    (6.023*10^23) * (0.1) * 10 = 6.023*10^23 electrons
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